u-boot/cpu/mpc824x/drivers/i2o/i2o2.S

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2001-11-28 17:49:55 +00:00
/**************************************
*
* copyright @ Motorola, 1999
*
**************************************/
/**********************************************************
* function: load_runtime_reg
*
* input: r3 - value of eumbbar
* r4 - register offset in embedded utility space
*
* output: r3 - register content
**********************************************************/
.text
.align 2
.global load_runtime_reg
load_runtime_reg:
xor r5,r5,r5
or r5,r5,r3 /* save eumbbar */
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lwbrx r3,r4,r5
sync
bclr 20, 0
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/****************************************************************
* function: store_runtime_reg
*
* input: r3 - value of eumbbar
* r4 - register offset in embedded utility space
* r5 - new value to be stored
*
****************************************************************/
.text
.align 2
.global store_runtime_reg
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store_runtime_reg:
xor r0,r0,r0
stwbrx r5, r4, r3
sync
bclr 20,0